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autofs-5.0.9 - amd lookup add parent prefix handling
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From: Ian Kent <raven@themaw.net>
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---
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include/automount.h | 1 +
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lib/master.c | 3 +++
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modules/parse_amd.c | 31 +++++++++++++++++++++++++++++++
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3 files changed, 35 insertions(+)
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diff --git a/include/automount.h b/include/automount.h
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index b304517..615efcc 100644
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--- a/include/automount.h
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+++ b/include/automount.h
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@@ -491,6 +491,7 @@ struct kernel_mod_version {
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struct autofs_point {
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pthread_t thid;
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char *path; /* Mount point name */
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+ char *pref; /* amd prefix */
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int pipefd; /* File descriptor for pipe */
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int kpipefd; /* Kernel end descriptor for pipe */
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int ioctlfd; /* File descriptor for ioctls */
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diff --git a/lib/master.c b/lib/master.c
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index 4ac3c6a..df4aef6 100644
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--- a/lib/master.c
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+++ b/lib/master.c
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@@ -86,6 +86,7 @@ int master_add_autofs_point(struct master_mapent *entry, unsigned logopt,
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free(ap);
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return 0;
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}
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+ ap->pref = NULL;
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ap->entry = entry;
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ap->exp_thread = 0;
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@@ -144,6 +145,8 @@ void master_free_autofs_point(struct autofs_point *ap)
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if (status)
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fatal(status);
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+ if (ap->pref)
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+ free(ap->pref);
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free(ap->path);
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free(ap);
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}
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diff --git a/modules/parse_amd.c b/modules/parse_amd.c
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index 54da1a5..295a10f 100644
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--- a/modules/parse_amd.c
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+++ b/modules/parse_amd.c
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@@ -736,6 +736,36 @@ static void normalize_sublink(unsigned int logopt,
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return;
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}
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+/*
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+ * Set the prefix.
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+ *
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+ * This is done in a couple of places, here is as good a place as
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+ * any to describe it.
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+ *
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+ * If a prefix is present in the map entry then use it.
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+ *
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+ * A pref option with the value none is required to use no prefix,
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+ * otherwise the prefix of the parent map, if any, will be used.
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+ */
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+static void update_prefix(struct autofs_point *ap,
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+ struct amd_entry *entry, const char *name)
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+{
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+ size_t len;
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+ char *new;
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+
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+ if (!entry->pref && ap->pref) {
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+ len = strlen(ap->pref) + strlen(name) + 2;
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+ new = malloc(len);
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+ if (new) {
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+ strcpy(new, ap->pref);
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+ strcat(new, name);
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+ strcat(new, "/");
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+ entry->pref = new;
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+ }
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+ }
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+ return;
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+}
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+
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static struct amd_entry *dup_defaults_entry(struct amd_entry *defaults)
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{
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struct amd_entry *entry;
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@@ -1044,6 +1074,7 @@ int parse_mount(struct autofs_point *ap, const char *name,
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sv = expand_entry(ap, this, flags, sv);
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sv = merge_entry_options(ap, this, sv);
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normalize_sublink(ap->logopt, this, sv);
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+ update_prefix(ap, this, name);
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dequote_entry(ap, this);
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